National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fair

34°F

1°C

Humidity 82%
Wind Speed NE 5 mph
Barometer 30.02 in (1016.7 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 22 Mar 1:56 am EDT
Extended Forecast for

South Dennis MA

  • Overnight

    Overnight: Mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely, mainly after 3pm. Cloudy, with a high near 45. South wind 6 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Slight Chance
    Rain then
    Rain Likely

  • Sunday Night

    Sunday Night: Rain. Low around 37. Southwest wind 6 to 11 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 37 °F

    Rain

  • Monday

    Monday: A chance of rain and sleet before 9am, then a chance of rain between 9am and 4pm, then scattered rain and snow showers after 4pm. Cloudy, with a high near 38. North wind around 17 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. Little or no snow and sleet accumulation expected.

    High: 38 °F

    Chance Wintry
    Mix

  • Monday Night

    Monday Night: Isolated snow showers before 9pm. Mostly cloudy, with a low around 30. North wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Isolated Snow
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. North wind 5 to 7 mph.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. Southwest wind around 7 mph.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 46. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 46 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34. Southwest wind around 6 mph.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 35. Calm wind.
Sunday
Rain likely, mainly after 3pm. Cloudy, with a high near 45. South wind 6 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain. Low around 37. Southwest wind 6 to 11 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
A chance of rain and sleet before 9am, then a chance of rain between 9am and 4pm, then scattered rain and snow showers after 4pm. Cloudy, with a high near 38. North wind around 17 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. Little or no snow and sleet accumulation expected.
Monday Night
Isolated snow showers before 9pm. Mostly cloudy, with a low around 30. North wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 40. North wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 32. Southwest wind around 7 mph.
Wednesday
Partly sunny, with a high near 46. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 34. Southwest wind around 6 mph.
Thursday
A chance of rain before 2pm, then a chance of rain after 3pm. Partly sunny, with a high near 49. South wind 6 to 9 mph. Chance of precipitation is 30%.
Thursday Night
Rain likely. Cloudy, with a low around 36. South wind 8 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday
Rain likely. Partly sunny, with a high near 47. Northwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Friday Night
Partly cloudy, with a low around 25. North wind around 8 mph.
Saturday
Mostly sunny, with a high near 38. North wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
1:44 am EDT Mar 22, 2026
Forecast Valid:
2am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation